Fused-ring energetic materials are considered to be promising energetic materials. However, their practical applications are usually hindered due to the tedious synthetic routes. In this work, 4-amino-3,8-dinitropyrazolo­[5,1-c]­[1,2,4]­triazin-7-ol (4) was easily prepared within three straightforward steps starting from commercially available ethyl cyanoglyoxylate 2-oxime (1). Compound 4 is a promising heat-resistant explosive, with remarkable thermal stability (decomposition temperature 332 °C) and thermal sensitivity (burst point 380 °C at 5 s). In addition, it demonstrates high density (1.88 g cm–3), good detonation velocity (8538 m s–1), and low impact and friction sensitivities (IS > 40 J; FS > 360 N). Optimized conditions for the synthesis of 4 have also been investigated, and a scale of 10 g could be prepared over one-batch reaction using the modified synthetic path with a high overall yield (46%). The advanced performance and scalable production of 4 make it a bright prospect for industrial production.

3,6-Diamino-1H-[1,2,4]triazolo[4,3-b][1,2,4]triazole (1) and its energetic salts (2-9) were designed and synthesized based on a fused-triazole backbone with two C-amino groups as substituents. Their physicochemical and energetic properties were measured or...

By using the data from Chinese listed companies in the Shanghai and Shenzhen A-share market for the period 2007 to 2019 and the Report on the Work of the Government, this paper investigates the impact of the local government’s economic growth target constraints on enterprise technological innovation and its mechanism. It is found that the local government’s economic growth target constraints significantly inhibit enterprise technological innovation, which is more obvious in the samples of SOEs, regulated industries, and enterprises at low marketization levels. The change of government officials’ performance appraisal indicators from the quantity to quality of economic growth can alleviate the negative effect. The mechanism effect test indicates that the local government’s economic growth target constraints will aggravate enterprise financing constraints and decrease the contribution of R&D investment to enterprise performance, and further inhibit enterprise technological innovation.

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